I have a current setup of intellij 2016 which compiles my java files on the fly. Due to some configuration in intellij it is possible to propagate any changes directly to tomcat. This way I don't have to manually build a new application and deploy it to tomcat which increases user productivity.
We want to remove tomcat and start using wildfly10 but also keep the hotdeploy functionality. On top of that the wildfly server will be hosted in a docker container.
So what I did is that I mounted the wildfly/standalone/deployment/myapp.war using docker to my host directory myapp/target/myapp.war. In addition I configured a jboss remote server configuration with remote stating set to same file system and let maven build an exploded war. This way if a maven build is performed, the contents of the target/myapp.war directory is directly available in my docker container. When I run the container and perform a new maven package, I do see that wildfly states that the new changes are found and redeploying has succeeded. Unfortunately this only goes well once or two times in a row.
So coming from the tomcat hotdeploy where no maven build was involved and any changes where directly available in tomcat, I'm wondering if the same can be achieved with the setup: intellij, maven, wildfly and docker. So if a change of a java file in intellij is compiled and pushed to wildfly without redeploying or maven build?
Wild-fly - eclipse supports 100 % Hot Code replacement
you have to start web-app in debugging mode .
For every change in java code just do a maven install and refresh
the target .
Limitations :
you can only replace statements in method .
you are not allowed to change whole class and new methods .
Related
I am working with a full-stack application(JSP and Java,Spring based). It is having an embedded tomcat server. Suppose I made some changes in the tomcat source code relevant to the embedded tomcat server(same tomcat version) which I use in my application.
I need to debug the tomcat source code when upping my application with the embedded tomcat server.
Is there any way to achieve this?
Note: I use Apache ANT as the build tool.
To achieve what you want you need to substitute the jar file with embedded tomcat (I guess this is org.apache.tomcat.embed:tomcat-embed-core). Please follow these steps:
First of all you need to build the jar from sources that you've modified locally by running e.g. mvn clean install. This would install the jar built locally into your local maven repository. Pay attention, that in order to distinguish your build from the rest you need to specify your custom version in pom.xml of Tomcat sources (e.g. you specify 9.0.0-my-custom-build)
As soon as your custom build is now in m2 it can be used by your main application. In <dependencyManagement> section of your pom.xml you need to specify this:
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-core</artifactId>
<version>9.0.0-my-custom-build</version>
</dependency>
This declaration forces maven to use tomcat of your custom version i. e. 9.0.0-my-custom-build.
Build your application and run it. At debug time you'll be able to see and debug your changes.
P.S. No matter what is your building system, the clue is the same: jar built from modified sources must substitute the default one in classpath of your application.
I have an application built in Spring Tool Suite and using angular as well for frontend. I am building my maven and the deploying the war in Tomcat. While the Spring dev-tools work fine for any application when it is deployed form the tomcat container within STS but not when I put the war in external Tomcat. Is there any way to hotSwap the application other than blackboxing my javascript in Chrome. Can anyone list down the complete steps to follow. I'm a noob.
I have already put a dependency sping-devtools in maven. There are many answers related to that but none of them is working. It is a big project and takes 4 minutes to build and then I need to deploy it in tomcat which is a lot of burden.
Looks like you are looking to hot reload the static files. In IntelliJ, it's simple as saving your code changes and doing a Build Project CTRL + F9. It's even better if you install a Live Reload extension for your browser so that any changes made is refreshed automatically. There are also other similar options for compile & build automatically in IntelliJ as well other IDEs such as Eclipse.
I was wondering if IntelliJ has a built in Application Server (like Tomcat) that I can use without having to download Tomcat directly?
Right now when I go to Run | Edit Configurations, Defaults, Tomcat Server, Local, it asks me to specify the Tomcat home directory.
Previously I had used myEclipse and it came packaged with a Tomcat so I would be suprised if the ultimate version of IntelliJ does not have this.
Intellij does not include built in application server. It has simple web server they refer to as Webstorm. However it is not application server.
Here is excellent resource (official docs) for working with application servers in intellij which you may find to be useful including tips on integrating it IDE via plugins etc:
Working with Application Servers
You need to download an application server manually.
Or you could use a Maven/Gradle dependency to start Tomcat programmaticly from the Main method, or a plugin for starting it via command line e.g. mvn tomcat:run.
we recently migrated to Maven Build manager & git hub repository for our Java web-app. Also i switched to eclipse as eclipse has good set of plugins.
As a new bie, i am simply running mvn clean package from terminal at the code root directory. And then moving the compiled code i.e., /target/SNAPSHOT/* to tomcat/webapps/ROOT location.
And then starting Tomcat7 server. The process is time taking especially when i do code changes in Java & configuration .xml files.
I want to do it completely in IDE environment as i did earlier in Netbeans, update code -> build and run in debug mode, -> do code changes and then commit.
Heard of egit & m2e in eclipse for maven & github integration, but not sure how to use it.
Please walk me through the steps required in doing so. I am completely new to eclipse.
--
Thanks
You might want to consider using maven-jetty-plugin http://docs.codehaus.org/display/JETTY/Maven+Jetty+Plugin for running the webapp. You will not need to copy over stuff to tomcat. After configuring this plugin, you can simply run your application by doing mvn jetty:run
I generally do not like running webapps inside Eclipse. It's a personal prefrence, but it is always nice to have an IDE neutral way of building and running your applications. If you have m2e things should work simply fine. I have seen maven-jetty-plugin having hot pluggability where if you changed your web.xml, jetty would reload your application.
We use Git for version control and Maven for dependency management and build automation. Once your project has successfully imported into Eclipse and recognized as a valid java web project, you don't need either Git or Maven in order to build/run it inside IDE. Just creat a server using you existing tomcat installation, add the project to server, then select Run as > Run on Server.
The Complete Guide:
Creating a server
Adding projects to a server
Starting a server
For more details, check out Testing and publishing on your server.
I am getting tired of all the bugs in eclipse and m2eclipse, and would like to build with maven using the command prompt, plus afterwards start the server, and deploy the application to the server and publish it using the command prompt. Normally I do that within eclipse servers tab.
If I make a change to the code, then I should just rebuild with maven and republish.
I am aware that you can deploy an EAR in Wepshere admin web console, but it is not ear I am thinking of, at least I don't think so. I want to be able for example, once application is deployed, jRebel should be able to reload the clases in the jvm, but I believe the ear file is standalone so that wouldn't work.
So,
How can I start the server from the command prompt, plus deploy a project and publish it ?
Thanks!
You can automate the build so that it deploys the app as well, at least with Maven. Have a look at this post: Maven 2 and WebSphere:
WebSphere has (had?) a Rapid Deploy feature that you can use for "hot" deployments. Essentially it fired up a headless Eclipse for this, but it was much faster than a full EAR build and just as dynamic as going through WTP.
At the time, we had an Ant task that we used to copy the files over to the WRD directory. I'm not sure how that would work with Maven, but I imagine one could rig up something.